Hello Welcome in H.C.M. I read your medical history conserning your problem of costant ear blockage and that can be temporarily relef by blowing nose against closed nostrils. This clearly shows that your eustachian tube is blocked. To manage a thorough examination of nose, paranasal sinuses, oral cavity & nasopharynx and some basic investigations like- 1- C.T. Scan of paranasal sinuses. 2- Culture & sensitivity of throat swab. 3- Impedance audiometry. By the co-relation of clinical findings with inferences of investigations one may made diagnosis. The possibilities are- a- Sinusitis with recurrent sore throat. b- Enlarged Adenoids. c- Chronic pharyngitis. d- Fibrosed eustachian tube and its opening. Depending upon the diagnosis it is treated, treatment may be coservative or surgery of sinuses, adenoids or by insertion of gromet on ear drum. Regards.